Lock.



M.BAKST.

LOCK. APPLlATloN 'msn nume. lent lNl/ENTH Max BakSJr ATTORNEYS 2 snms-snsn 2 Patented Aug A. Il Y 5 i 3 u 3. www-- a .ma I s C A@ WIT NESSES mz Nannrs uns w.. PHomumn.. Hammam". n. q.

MAX BAKsT, oEBEooKLYNNEWlYoEK, AssIGNoE To UNITED STATES :BOLT Loox coivr-PANY, 1NC., or NEWYORK, N. Y., A CORPORATION or NEW YORK. f

LOCK.

. Appiivation filed Augutza, 1917. ykswarm.187,595.

To all whom/t may concern? f Be it Vknown that/I, MAx'BAKsT, a citizen of the United States, and a resident of the city of Newl York, borough of Brooklyn, 1n the county of Kings and vState of New York, have inventedA a new and Improved Lock, of which the following is a full, clear, and

' exact description.

The object of the invention is to provide a new and improved.. lock .more especially designed as a mortise lock for use on house doors and the like and arranged with al y ings forming a part of this specification, in

which similar characters of reference indicate corresponding parts mall the views.

Figure 1 isa side elevationof the lock as applied to a door and w'ith'the bolts in' retracted position, Vpart, of the lock casing being shown brokenout and the door and door jamb being shownin section; f n

Fig. 2 is a front end view of the lockon the door; Y

Fig. 3 is an enlarged sectional sidev elevation of the lock as applied and with the.

bolts ,in shot out position.;

Fig 4, is across section .ofthe samev onV the 'line 441 of Fig. 3f; "and y y Fig. 5 is an enlarged cross section on the line,5`-'5 of Fig. l.' v y p. Y i

The casing fof thev lock 1s shown mory tisedfin a door 11,A and the casing is provided at its front edgevith anY attaching-bar 12 fastened byscrews or othersuitable fasten-V ing devices 13 to the edge of the-door 11,

as plainly indicated 1in Figt 1. Vithin the' Ycasing 10is mountedto slide a mam controlling bolt 15 which is'key controlled, as

hereinafter more fully explained, and which controls auxiliary bolts 16 and 17V spaced from the main bolt 15 above and 'below the same, and mounted to slidein bearings 18 l 55 and19 attachedto or forming partrof the specification of Letters Patent. i Patented Aug; 27, 19178.

TED STATES PATENT oEEicE.

attaching bar 12 and projecting fromthe back thereof into' the mortise in the door 11, as plainly indicated in Figs. 1 and3.V

In order to connect the main controlling bolt r15 with the auxiliary bolts 16 and17 for the latter to move in unison with the said main controlling bolt 15, the following arrangement is made: The controlling bolt 15 isprovided within the casing 10 with lugs 20,V and21 extending in opposite directions and provided with transverse pins 22 and 23 engaging slots 24, 25 in bell crank levers 26, 27, ulcrumedat 28 and 29 within the.

casing 10. Thebell' crank levers 26 and 27 are rfurther provided with slots 30 and'31 engaging transverse pins 32 and 33 attached to the inner ends or heads 34, 35 of connecting members 36, 37. The connecting mem- Y bers 36,37*,are in the form of bars mounted to slideon the back of the attaching bar V12 and having their heads or ends 34 and 35 mounted to slide in guideways 40'and` L1-1 fo1med;within the casing l0. The outer portions of the connecting members 36, 37 Aare provided with slots 42, 43 engaging pins 44C, 15 projecting from the back of the atf taching bari12. The ends of the connecting members 36 and 37 are provided with transversely extending pins 50, 51 engaging slots 52,53 `formed in bell crank levers 54, 55 VfulcrumedY at 56, 57 on brackets 58, 59 integral with'the bearings 18 and 19.;V The bell crank levers 54:, 55 are provided with slots 60, 61 engaged by pins 62, 63 heldV on brackets 64:, `65 integral with the auxiliary bolts 16, 17 and extendingthroughslots 66, V67 formed in the bearings 18 and 19; By

the use of the brackets 64, 65', the auxiliary bolts 16 and 17 .are heldlagainst turning.

It will be noticed that when the main controlling bolt 15 is moved outward from retracted into shot out locking position4 then its pins 2,2, 23 impart a swinging motion to the 'bell crankleveis 26, 27, which in turn impart a sliding movement to the connectf ingmembers 36, 37 by the pins 32,33,"the

Vconnecting rmember 36 moving @downward and the fconnectingimcmber 37 -moving'fup- Y.

wardlf'llhis4 rmovement kofthe connecting members '36, 37 causes' a swingingxot the lbell" crank levers L54, 55 kwhich-by thei'p'ins `62, 63 impart a simultaneous 'outwardl move- Vment to theA auxiliary bolts 16 and 17.` Thus vthe `three bolts 15, 16 and 17 lare.simultanefously shot `outpon moving themain controllio 27, 54, and that of the connecting members 36, 37 is reversed, whereby the auxiliary bolts 1G and 17 slide inward siniiilta:

neoiisly with the main bolt 15.

The inner end oit the main boltv15 is provided with a notch into which projects an arm 71 having a hub 72 mounted ,to .turn in suitable 'bearings in the casing l0.V A latch spindle 73 is preferably connected with the hub "72 to permit oit imparting a swinging -n'iotion to` this arm 71 -troni `the inside of the doorwhenever it is desired to actuate ther bolts 15, 16 and ,17. The arm 71 is pressed on by a spring 75 held on the main-controlling bolt 15 and the said armis provided intermediate its free end and the hub 7 2 with a pin 7 6 extending into a slot 77 formed in a slide 80 mounted to slide sidewise on a suitable guideway vformed in the casing 10. The slide 8O is. provided with a fork 82 into which isadapted to pass a cam `9() heldjon the inner end of a plug 91 of a key controlled lock 92, of the Yale or other typfe, secured to the casing l() and having the keyhole end of its plug yextending to the outer face of the door. Thus when the proper key is inserted in the plug 91 and turned then the cam 9()r imparts a swiiig ing motion to the slide which in turn imparts a swinging motion by the pin 7G .to tliearm 70, and Athe latter imparts 'a sliding movement to the mainl controlling bolt 15 either outward into locking position or inward into retractedposition according to the direction in which the key is turned.

kThe door lock is provided with the usual spring-pressed latch bolt controlled by a roll back 101`engagedby the knob spindle 102 carrying the usual knobs for turning the spindle to cause thc roll back to actuate the latch bolt 100. As this latch bolt and its mechanism forms no part of the present invention further detailed description of the same. is not deemed necessary.

Then thedoor `11 is closed and the bolts 15, 1G and 17 are shot out they engage keep- `ers formed in a keeper bar 111 secured to the door jainb 112 to securely hold the doorlockedin closed position and against being` opened by burglars or other unauthorized persons. f l

Bypgproviding the slotted bell crank, levers ,in the connection between the maiiicontrolling. bolt 15 and .thc auxiliary boltslG 4vand 17, it requires but little Aphysical lforce to turn the keywith a view; t-o move the said bolts into locking or imlockingposition.

HHaving thus described myinveiition, I claim as new and desire to secure by Letters Patent 1. In a lock a casing, bearings one above and the other below the casing, a main bolt "h'aving their inner ends loosely pivoted to in the casing, an auxiliary bolt in each bearing, ybell crank levers pivotcd to the casing and each havinga pivotaliand sliding coniiection with the main bolt, sliding members the bell cra-iik levers, bell crank levers pivoted to the bearings and pivotally and slidably connected with the auxiliary bolts and the outer ends of the sliding members.

In a lock, a casing provided with an attaching bar for securing the lock to a door, said bar projecting beyond the casing and provided with bearings at its ends, spaced bolts, of which one is the controlling bolt and is mounted to slide in the casing and through the said bai', the other bolts being auxiliary bolts and being mounted to slide in the said bearings, key controlled means mounted on the casing and engaging the said ycontrolling bolt, bellv crank levers connected vwith the said controlling bolt, bell Acrank levers fulcrumed on. the said bearings aiid connected with the said auxiliary bolts, Vand Vconnecting members slidably mounted on the said casing and its attaching bar and connecting the bell crank levers of the controlling bolt with the bell crank levers of the auxiliary bolts.

Y. 3. In a lock, a casing provided with an attaching bar for securing the lock to a door and provided outside oi the casing with bearings, spaced bolts, ot which one is the controlling bolt and is mounted to slide in the casing and through thevs'aid bar, the

other bolts being auxiliary bolts andbeing 100 mounted tolslide in the said outside bearings, key controlledineaiismmounted on the said casing and engaging the said control ling bolt, pins on opposite sides of the said controlling bolt, inner bell crank levers hav- `105 ing slotted arms and tulcrumed in the said casing, one of the slotted arms of each bell crank lever being` lengaged by the said pins, sliding members mounted to slide on the casing and its attaching' bar, outer bell 110 otherv slotted Varms of' the said inner bell 115 crank levers connected with the controlling bolt, and the pins on the outer ends of the sliding,inembersengagiiig each one of the slotted arms of tliebell crank levers mountedon the bearings, and pins on .the said anxiliaryfbolts and each engaging the other slotted larm of the corresponding outer bell crank 'levert y p y 4.. vIn ..a'lock, a .casing provided with an door, thei ends ot the said bar being provided with beariiigshaviiig slots, a mani controlling bolt mounted to slide in the said -casing yand through the said attaching bar, Y, A

the said main bolt having 'brackets extend- 1(30 vattaching bar for attaching the lock Vto a ing in opposite directions and provided with pins, auxiliary Vbolts mounted to lslide in the said bearings and having brackets slidably engaging .the slots thereof, each bracket having a pin, innerbell crank levers fulcrumed in the casing and engaged by the pins of the said main bolt, outer bell crank levers fulcrumed on the said ybearings and engaging' the pins on the auxiliary bolts, and connecting members slidable in the said casing and on the back of its attaching bar, the inner ends fr the said connecting inembers being connected with the bell crank levers in the casing and the outer ends of the said connecting members being connected with the bell crank levers on the said a fork, a latch spindle, a hub on the spindle and provided With a spring pressed arm adapted to engage the notch of the bolt and havingV a pin Working in the slot of the slide, and a key controlled plug having a cam Working in the fork of said slide.

lMAX BAKST.

Genies this patent may be obtained for Ive cents, each, by addressing the Commissioner of Patents,

' Washington, D. U. s 

